4-Port USB to RS-232 Hub - UC2324, ATEN Converters | ATEN Corporate Headquarters
4-port USB to Serial RS232 Converter
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Insignia™ 1.3' USB-to-RS-232 (DB9) PDA/Serial Adapter Cable, with Prolific Chipset Black NS-PU99501 - Best Buy
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USB to TTL RS232 RS485 Serial Port Converter Board 3 USB HUB Splitter Expansion|Computer Cables & Connectors| - AliExpress
4-Port USB to RS-232 Serial Adapter Hub
010845 PoweredUSB 4-Port Hub with RS232 – CyberData Corporation
8 Port Serial Hub USB to RS232 Adapter - Serial Cards & Adapters | StarTech.com
32 Port RS-232 USB-to-Serial Adapter - Coolgear
Keyspan RS232 to USB-A Adapter, DB9, 3-ft Cable | Eaton
Parallax USB to Serial (RS-232) Adapter with Cable - Parallax
4 Port USB to DB9 RS232 Serial Adapter - Serial Cards & Adapters | StarTech.com
4-Port USB to RS-232 Serial Adapter Hub
StarTech.com 8 Port USB to Serial RS232 Adapter - Wall Mount - Din Rail - COM Port Retention -
Black Box 8-Port USB to RS232 Serial Adapter / Converter, 8 x DB9 Male - IC1023A - -
4-Port USB to Serial RS232 Hub | TRENDnet - TRENDnet TU-S4
4-Port USB to RS-232 Hub - UC2324, ATEN Converters | ATEN Corporate Headquarters
StarTech 4-Port USB to Serial Adapter Hub with COM ICUSB2324X
